Ophthalmic mounting



March 27, 1934. w c, EATON 1,952,847

OPHTHALMIC MOUNTING Filed Sept. 23, 1930 i INVENTOR 222421422: Ci'aibn Patented Mar. 27, 1934 PATENT OFFICE MNETED STATES OPHTHALMIC MOUNTING Application September 23, 1930, Serial No. 483,878

2 Claims.

This invention relates to improvements in ophthalmic mountings and has particular reference to an improved connection for the parts thereof and the process of forming the same.

5 The principal object of the invention is to provide improved means and process of forming the connecting parts of an ophthalmic mounting in such relation that they cannot become loose or disengaged.

Another object of the invention is to provide an improved process of forming the ends of a bridge for an ophthalmic mounting for connection to the lens holding members.

Another object of the invention is to provide an improved guard and connection and process of forming same.

Other objects and advantages will become apparent from the following description taken in connection with the accompanying drawing and it will be understood that many changes may be made in the arrangements of parts, details of construction and steps of the process without departing from the spirit of the invention as set forth in the accompanying claims. I, therefore,

do not wish to be limited to the exact details and process shown and described as the preferred forms only having been shown by way of illustration.

Referring to the drawing:

Fig. I is a front View of an ophthalmic mounting embodying the invention;

Fig. II is a section on line II-II of Fig. I;

Fig. III is a view similar to Fig. II but showing a modification;

Fig. IV is an enlarged fragmentary perspective view of the bridge and guard connection showing the parts disengaged; and

Fig. V is a perspective view showing a modified form of guard and connection member.

With some types of ophthalmic mountings it is necessary that their parts be easily and quickly interchanged or replaced to meet the requirements of different individuals.

This interchangeability allows the dealer to easily and quickly remove the parts such as bridge or guards and replace them with others of the right sizeto fit the facial requirements of the customer.

It is also necessary that when such parts are connected that they be firmly joined so as to hold the mounting in proper position before the eyes of the wearer.

In prior art mountings of this type, the ends of the parts were left free in the stud boxes by which they were connected to the lens holding members.

These free ends easily became bent from shape or worked loose and allowed the lenses to sag and move out of their prescribed position before the eyes.

It is, therefore, the prime object of this invention to provide improved means and process of forming the connecting parts of an ophthalmic mounting so that they may be easily and quickly connected and disconnected and when connected they will be so maintained that they cannot be bent from shape and workloose.

Referring to the drawing, wherein similar reference characters designate corresponding parts throughout, a pair of lenses 1 are connected by the bridge 2 and are adapted to be held before the eyes of the wearer by the guards 3 and temples 4 which are connected to the lenses by the end pieces 5.

The bridge 2, which connects the lenses 1, comprises a bar portion 6 having depending side pori.

tions 7. These side portions '7 are formed from an integral extension of the central bar portion 6 which is bent downwardly at 8 adjacent its ends, thence rearwardly at 9 to a loop 10, then forwardly to a loop 11, thence rearwardly at 12 to a bend 13, then downwardly to a loop 14 and then upwardly to the attaching point 15 formed as shown in Figures II and IV by soldering the end to the rearwardly extending portion 12. The

depending side portions 7 are then flattened, as

shown in Fig. IV to permit the side portions to be flexed in the plane of the lenses.

The portion below the soldered end 15, that is, the portion that fits in the stud box 16 is then pierced with a hole 17 to receive the stud box 90.

screw 18. The stud box 16 is adapted to receive the pierced end 19 of the guard 3.

To secure the parts together, the pierced ends of the depending side portions 7 of the bridge 2 and the attaching ends 19 of the guards 3 are inserted in the stud boxes 16 so that the holes in said members are in alignment. The screws 18 are then inserted through said aligned openings and tightened to firmly secure the parts together.

In the modification shown in Fig. III, the side portion I is formed as previously described with a rearward loop 20, forward loop 21, rearwardly extending portion 22, a downwardly extending portion 23, an upward extending portion 24 which 105,

terminates with a rearwardly extending end 25 which acts as a spacing member to hold the portions 23 and 24 in a definite spaced relation. The side portions 7 may then be flattened and pierced as previously described. If desired the end 25 110. I

may be soldered to the portion 23 at the point 26, although this is not necessary as the close fit of the parts in the stud box 16 will serve to hold the portion 25 in contacting relation with the member 23 and prevent the end from bending and working loose.

In Fig. V there is shown a modified form of guard and connection. The guard in this instance is formed from a single bar of material which is provided with a series of bends which shape it into a nose engaging portion 27 and a stud box connecting portion 28.

The ends of the bar member are adapted to meet at 29 and are secured together by solder or like means.

The stud box connecting portion 28 :is then pierced at 30 to receive the stud box screw as previously described in the preferred form.

If desired the nose engaging portion of the guard may be flattened to form more contacting surface.

Attention is called to :the fact that the guard shown in Fig. V can be made of a bar of filled material, such as gold covered base metal. This provides means wherein a guard may be formed from a cheaper grade of material and still have the advantages of one formed from a solid precious metal. When the guard is completed as shown in Fig. V the base metal is entirely sealed within the precious metal.

From the foregoing it will be seen that I have provided simple, efficient and economical means and process of forming the connecting parts of an ophthalmic mounting so that they may be easily and quickly interchanged and when con nected cannot bend from shape and become loose.

Having described my invention I claim:- v

1. A flexible bridge for an ophthalmic mounting comprising a central cross bar of any desired shape, having depending side portions formed with a rearwardly extending portion terminating in a loop, a forwardly extending portion terminating in a loop, a rearwardly extending portion terminating in a downward extension, which is looped and bent upwardly to form a portion lying substantially parallel with said downward extension and in spaced relation thereto, and means adjacent the upper end of the upwardly extending portion for holding it against displacement toward the downward extension, said forwardly and rearwardly extending loop portions and downwardly extending portions lying in a single plane.

2. In a device of the character described in combination with guard and lens connecting means, a flexible connecting bridge member having depending portions on each side thereof formed from a single strand of wire bent rearwardly to a loop, thence forwardly to a loop, thence downwardly to a loop, thence upwardly substantially parallel with the downwardly extending portion and in spaced relation thereto and means for attaching the upper end of the upwardly extending portion to the downward extending portion for holding the said upward and downward extending portions in definite spaced relation, said downward and upward extending portions being pierced intermediate their ends.

WILLIAM C. EATON. 

